Scale.



1. H. A. BousFl-ELD.

SCALL APPLICATION FILED FEB. 28.1917.

1 ,284,049. Patented Nov. 5,1918.

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` UNITED STATES PATENT OFFICE.

JOHN H. A. BOUSFIELD, 0F ST. JOHNSBURY, VERMONT, ASSIGNOR T0 E. AND T. FAIRBANKS AND COMPANY, OF ST. JOHNSBURY, VERMONT, A CORPORATION 0F VERMONT.

SCALE.

To all whom t may Concern.'

Beit known that I, JOHN H. A. BoUs- FIELD, a citizen of the United States of America, residing at St. Johnsbury, in the county of Caledonia and State of Vermont, have invented certain new and useful Improvements in Scales, of which the followingis a specication, reference being had therein to the accompanying drawings.

The invention relates to scales and has more particular reference to that type known as dial scales, in which the load is balanced by a variable resistance, the weight being indicated upon the dial. The invention comprises various features of construction, including, first, the means for forming the variable resistance; and second, the locking mechanism for the beam.

In the drawings: p

Figure 1 is a section through a scale embodying my invention;

Fig. 2. is a section at right angles thereto.

A is the dial casing which is mounted upon a suitable pedestal B, and at its upper end is provided with a shelf C upon which is mounted the beam D. This beam may be fulcrumed in any suitable manner, but as shown is provided with a flexible plate fulcrum E secured at its upper end to the beam by the clamp F and at its lower end clamped to the fulcrum bracket G on the shelf C. H is an arm depending from the beam and connected at its lower end to a rack-bar I which engages a pinion J for rotating the index K adjacent to the dial L.

To variably resist the oscillation of the beam, I have attached thereto a depending bar M having thinned flexible and resilient portions N and N at the opposite ends thereof. The lower end of the bar is attached to a transversely-extending bar P provided with thinned, resilient and flexible portions Q and Q and having its outer end rigidly attached to a lug R on the frame. Thus whenever the beam is oscillated the thinned portions of the bars N and P must be flexed, which will interpose a resistance proportional to the amount of deflection.

To lock the beam from movement when the scale is not in use, I have provided locking mechanism of the following construction: S is a rod extending through the casing A and shelf C and preferably slidably engaging a bushing or bearing T in the Specification of Letters Patent.

Patented Nov. 5, 1918.

Application led February 28, 1917. Serial No. 151,586.

shelf. This rod also passes through an apertured lug U projecting from the beam D, and a collar V on the rod is adapted to bear against the lug when the rod S is drawn downward. This collar is yieldably held against a. shoulder 0n the rod by the spring V. The lower end of the rod S is attached to a crank X through the medium of a lever X and link X2, and a handle Y secured to the crank may be operated to rock the lever. Thus where it is desired to lock the beam, the handle Y is turned to draw downward on the rod S, which through the medium of the spring V, collar V and lug U, will press the beam against the stop Z and hold it from oscillation.

What I claim as my invention is zl. In a scale, the combination with an oscillatory beam, of a member attached at one end to said beam and extending substantially vertically therefrom, said member being provided with a flexible resilient section, and a member secured to the lower end of said first-mentioned member, extending laterally therefrom and also provided with a flexible resilient portion, the outer end of the latter member being anchored, whereby the flexible resilient portions of said members will interpose a variable resistance to the oscillation of the beam.

2. In a scale, the combination with an oscillatory beam, of a flexible plate fulerum for said beam, a member secured to the beam and extending transversely therefrom, said member being provided with resilient flexible portions near its upper and its lower end, and a member secured to the lower end of said first-mentioned member extending transversely therefrom and anchored at its opposite end, the latter member being also provided with a flexible resilient portion whereby the oscillation of the beam is variably resisted by said flexible resilient portions.

3. In a scale, the combination with an oscillatory beam and a stop for limiting the movement thereof, of a locking mechanism for holding said beam against said stop, comprising a rod, a yieldable bearing between said rod and beam and a handle for actuating said rod to form said beam against its stop.

4. In a scale, the combination with an oscillatory beam and a stop for limiting the movement thereof, of a locking mechanism, comprising a rod extending through an apertured lug on said beam, a bearing for said rod, *holding the same out of contact contact with its stop.

5. In a scale, the combination with an oscillatory beam and a stop for limiting the movement thereof, of a locking mechanism, comprising Aa rod, an apertured lng on the beam through which said rod passes, a collar on said rod, a spring for pressing said collar against a shoulder on the rod, and means for -drawing the rod downward to yieldably press said collar against said lug and t0 move said beam against its stop.

6. In a scale, the combination with a. beam, of a member secured to said beam and extending therefrom provided With a flexible resilient portion and a second member extending transversely of the first mentioned member and having one end anchored and the opposite end secured to said first mentioned member and an intermediate flexible resilient nortion.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN H. A. BOUSFIELD.

Witnesses:

HORACE E. ANDERSON, OsMAN A. ULBRICH.

Copies of this patent may be obtained for ve cents each, by addressing the "Commilsioner of Patenti,

Washington, D. C. 

